S. pyogenes is responsible for ________, a severe infection due to destruction of subcutaneous tissue that has a 30 percent mortality rate.

What is the treatment of choice for thalassemias?

a. Supportive transfusions b. Bone marrow transplant c. Chemotherapy d. Radiation

What is the most common problem with fenestrated tracheostomy tubes?

a. Relative frequency of accidental extuba-tion b. Increased likelihood of tracheomalacia c. Poor positioning of the tube fenestration d. Inability to provide mechanical ventilation